/*
 * Copyright (C) 2011 Urals State University,
 * Department of Mathematics and Mechanics
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package ru.edu.usu.cs.bubbles.engine.box2d;

import ru.edu.usu.cs.bubbles.engine.Spike;
import ru.edu.usu.cs.bubbles.engine.box2d.colliders.Collider;
import ru.edu.usu.cs.bubbles.utils.Point;

import com.badlogic.gdx.math.Vector2;
import com.badlogic.gdx.physics.box2d.Body;
import com.badlogic.gdx.physics.box2d.BodyDef;
import com.badlogic.gdx.physics.box2d.Fixture;
import com.badlogic.gdx.physics.box2d.FixtureDef;
import com.badlogic.gdx.physics.box2d.PolygonShape;

public class Box2dSpike extends Spike implements Box2dEntity {
	private Body spikeBody;
	private Collider collider = null;
	private static final Vector2[] vertices = {
		new Vector2(0, 0),
		new Vector2(1, 0),
		new Vector2(0.5f, (float) (Math.sqrt(3) / 2))
	};
	
	protected Box2dSpike(Body spikeBody, float angle) {
		super(angle);
		this.spikeBody = spikeBody;
		PolygonShape spikeShape = new PolygonShape();
		spikeShape.set(new Vector2[] {
				vertices[0], 
				vertices[1].rotate(angle),
				vertices[2].rotate(angle)
		});
		
		FixtureDef wallFixtureDef = new FixtureDef();
		wallFixtureDef.shape = spikeShape;
		
		Fixture wallFixture = spikeBody.createFixture(wallFixtureDef);
		wallFixture.setGameEntity(this);
		spikeShape.dispose();
		spikeBody.setType(BodyDef.BodyType.StaticBody);
	}
	
	@Override
	public Point getPosition() {
		return spikeBody.getPosition();
	}

	@Override
	public Body getBody() {
		return spikeBody;
	}

	@Override
	public Collider getCollider() {
		return collider;
	}

	@Override
	public void setCollider(Collider collider) {
		this.collider = collider;
	}
}
